Electric water heater



March G. N. MADSEN ELECTRIC WATER HEATER Filed Sept. 50, 1925 f/vuevvraeGus-ray fr fiaasav Framer/3 so into the outlet box 26.-

Pussies Mar. 8,1927, p 'i UNETEB QTATES GUSTAV IT. MADSEN, 035EINNIFIAIPGLIS, MIHNEEOTA, ASSIGNGR 9F GEE-THIRD Ti? CAR-L R. LIDG'IDHAND ONE-THIRD T0 ERIC B. GUSTKFSON, 39TH 0T! WZHIQEQ 'WELIE, MINNESQTA=ELECTRIC WATER HEATER; ilpplicationfileo September 30, 1925. Serial No.53,631.

Que object of my invention is to prov de passing down the length ottheseo ond pipe, 5i) a heater, such that hot water may he supthetemperature will be slightly increased, plied from individual tapsthroughput he so that by the t me it reaches the outlet system with 3minimum amount of pipe. 20,-the water will he as hot es lGSXI'GKl andAnother object is to provide an improved the heater is so designed thatby allowing 7 .forin of instantaneous Water heater wherein the water totravel, over u long length of the Water tube heated traverses an extremeheated inner pipe 23, the Water may he length of surface. raised to thedesired temperature as quickly Another object is to provide in ewster asit flows with a minimum emount'of eieoso heater, menus for actuating theheater whentrlcel energy. n erer the'tep is opened sothe water flowingThe outlet box 26 provides convenient oe' t ierefrom will he heated asit flows. means for joining the Wires from the serious TWith thesesndincidental objects in view, elements together 21ml they are it theinvention. consists of certain novel feeat the last terminal box 29 wsuitable tures of construction and combination of connection may bemscle to the service parts, the essential elements of which are thru theswitch which will not he lescrihed. F hereinafter describedWithreterence to the Looking at higure it will seen tlrewings, whichaccompany and forms part the water which. flows from the heater of thisspecification: any one of the hot Water tens, puss-es 2* In thedrawings, Figure 1 is a sideelevathe housing 30.

tion of my improved form of heater removed Looking at Figure will heseen that from the caloineti Figure 2 is an enlarged the water enteringthis housing st incl sectional detail of 2 fragment of onset the passingout at 32 will tend. to rotete the heating elements and pipes. Figure "3is Water "wheel 33 in a oonnter cloclzrvise rlir 5 side elevation of atap showing one Way in tion. which the current flowing thru the heaterLooking now at Figure 4, it will he can be controlled, Figure l is afront View that the rotation of the shaft 33- on of the controllingswitch and Figure 5 is the water Wheel is suitably enecl, will sectiontaken on the line 55, Figure 3. swing the arm 35 in a counter-clockwise-i e Looking now at Figures 1 and 2, the cold rection against thetension of ti Water may he brought in at either of the thereby closingthe contact 37, whirl J is points 20 or 21, unit passes thru the heatercontrol Contact for the current under pressure and does not depend uponthe heaters! thermsloirouletion. Q It is evident their tore, thatwhenever The heating element 22 is positioned withany one of the hot i itape is openin the tuheor pipe from which it is insuindividual tontrolsu'oh 'Wii' 3 loted and this pipe 23 screws into the head the heaterfussociete'rl r 24, the connections of the heating element energized andthe Water being brought out by suitable Wires at 25, and out thru thetop will.

as it flows, Theouter pipe 27 is screwed on to the I am aware that herehead 24, thus providing a space between forms ofelectricel waterheatithepipes 23 and 27 thru which the Water that I am the first to have cl maycirculate and as the'lieating element in wherein a single cold Water inno the pipe 23 is entirely surrounded l) water purpose of proviiling hoti i all of the heat confined therein is a sorloed throughout the entirehuilrli {incl sci by the Water. that I am also the first to naveprovirie The nipples 28, preferably with right and heater in such formthat the "passes or left hand threads connect the various pipes aplurality of heating elements in a series so 27, as shown in Figure 1,so the Water cirthat While the water leaving l e 't me oulates thru theentire series of pipes and it is of very high temperature, is evidentthat it the water enters at 21 for individual elements is requiinstance, in passing thru the length of the temperatu e o he Water tofirst pipe, it will be slightly warmed and in. tent while the Water ispassing ore illustrated it in one pariaicu ar ciesigzu 1 d6 not wish itundersta d thai I limi', myself tax-ibis const-ructidn, as it is widestthat the appiication of the invention may Es vaI-ied in many ways WithinHm seepe of the in lowing shim.

Claim:

In an eiectrimzi waiter haater, oh? cembinatiampf s, phu'aiity cfheating units, $2,611 somprising an electrical heating element, a pipesurrounding saifi filament and insuiaiezi thawin a second yipecencsntric with said first named mm but spaced there'figm, 2s.

head carrying b02521 0% said pi a dogma for the res and 0f the mater sfmy piyas means for bringing eiactricsai wnmatmns from smrl element tofl'e exienm 01. sald head, mdwlduafi mzflet boxes 01 each 93 said unitswith cnnduits theremtweaza t0 facilie' ata ah-e interc-csnnectien ofsaid ale-mania pipe wnnections betwean the outer pipes Q adjacent unizs,an inlet for the first 0i Mimi units leading to the interior 0% the)Quiet pips and of an outlet far the last 0 f said l mits leading to theinterim 0?? tin; mafia? pipe thereof, so Water may be passed 11m 2112 a?said auter pipes in series and heated bythe elements in said individualpip s.

GUSTAV N. MAJSSEIL

